Client crashes for me several seconds after launching it on macOS High Sierra with the following error message:
java.lang.ClassNotFoundException: org.lwjgl.openal.OpenALException
at jdk.deploy@9.0.1/com.sun.deploy.security.DeployURLClassLoader.findClass(Unknown Source)
at jdk.javaws@9.0.1/com.sun.jnlp.JNLPClassLoader.findClass(Unknown Source)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
at jdk.javaws@9.0.1/com.sun.jnlp.JNLPClassLoader.loadClass(Unknown Source)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
at com.wurmonline.client.launcherfx.WurmMain.start(SourceFile:205)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(Unknown Source)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$11(Unknown Source)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$9(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(Unknown Source)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(Unknown Source)